The Science of Time Travel -- Part Two

Time travel into the future is relatively easy -- forgive the pun -- but what about travelling into the past? Though nothing in the laws of physics prohibits it, such a journey would seem to violate our notions of causality and free will. And then there's the Grandfather Paradox, which physicists and philosophers have grappled with for more than a century... Video by science journalist Dan Falk, author of In Search of Time.
Part One can be found here: • The Science of Time Tr...
Thanks to Chris at www.motionblurm... for his video help (phone booth sequences) and Patrick Wellever for FCP support at the Knight Science Journalism office at MIT.
www.danfalk.ca

[@onaireves15]

Well done!

[@adric137]

is the delayed-choice experiment in physics retro-casual?

[@fivforfivfor]

You guys are constantly repeating what you heard someone else say You need to do your own thinking (Through hands on experiments) And you do not need any exotic matter , or a black hole , or worm hole (though you do have to sort of create your own type of a worm hole) 🙂🙂🙂

[@23paingel]

Around 7:09, what would that make me then, I killed the man who would lead up to my birth. So it is safe to assume that I was not born in that universe. If I decided to stay in said universe I would exist there but never have been born. So am I an unexplained phenomenon?